Giant's Castle, Isles of Scilly

Giant's Castle is an Iron Age cliff castle on St Mary's, Isles of Scilly, occupying a 0.4-hectare rocky promontory defended by sea cliffs 15-25 metres high. The landward side features three concentric banks and ditches protecting a small interior area of roughly 25m by 20m. Pottery sherds confirm its use as a high-status enclosure, possibly for economic or social purposes during approximately 800-43 BC. The site sustained damage during WWII from machine gun practice targeting.